http://forum.xda-developers.com/showthread.php?t=2620768&page=11Boost the overall volume of the phone:1) Open Dialer and type *#35789#*, this opens the Engineering Mode.2) Swipe right 2 times to reach Hardware Testing. Select Audio.- Normal Mode: No idea. Probably the earphone speaker.- Headset Mode: Headphones- LoudSpeaker Mode: Loudspeaker, obviously.- Headset_LoudSpeaker mode: No idea. Tell me what is it if you find out.3) Select the mode you want and change the Max Vol. 0~160 value.- Normal Mode: Default 128.- Headset: Default 120. Mine is 140, higher value causes distortion.- LoudSpeaker: Default 120. Mine is at 145.- Headset_LoudSpeaker: Default - Headset 112, Speaker 120.The changes apply immediately. Be careful though, high volume could damage your speaker. Do it at your own risk. If this is your first Android device, I suggest you get familiar with it. Try its basic functions, see how you can find things in the menus, settings etc. AFAIK there is no custom ROMs for neither T200 nor T200C (your device) so basically saving the device's stock state is okay, but you won't probably install any other ROMs in the near future.You have to know that with a rooted device you have absolute power on your device, even you have the ability to destroy it completely. So be extreme cautios and careful when you modify deep settings. Before doing anything dangerous, make sure you have read the howtos or guides carefully, and you fully understand what you are doing. And follow the guies step by step exactly how it is.As you have a rooted device, you can use the MTK droid tools Windows application to make a full backup of your device. For this, you will need USB drivers for your phone.I use PDA drivers for my T200 for normal mode operation (I mean when the phone is on, and connect to the PC via USB), I found it in this topic:http://www.chinaphonearena.com/forum...t-VCOM-DriversAnd for SP flash tools (another dangerous tool to make backup or restore your phone) when you are in preload mode (battery and sim cards off, just connect the USB cable, Windows device manager will find an MT65xx Preloader device) the preloader driver that worked for me is this one:http://singledrivers.blogspot.hu/201...r-windows.htmlHere is a good tutorial for using MTK droid tools, the latest version is 2.53 now.http://mtkforums.com/viewtopic.php?f=18&t=128This is a better one read both, you want to understand it.http://www.symbianize.com/showthread.php?t=1084943You can get MTK Droid Tools v2.53 here:http://ge.tt/9NbtXhG1/v/0?cHTH Framaroot.Press the 3-dot button on the top right, select Driver Status and see if Status says Normal or Abnormal.If you have rooted it, successfully installed busybox and the driver, you should be fine.thank you for your help, i already root my phone and already install viper4android, and is work perfect for my phone, audio is loud n nice.may i know can we separate volumes for Ringtone and notification sound ?I Got my THL T200 on Saturday and I'm pretty impressed.Rooted with Framaroot, installed TWRP Recovery and installed the Rooted Rom posted earlier.Then set up all my stuff, installed xposed framework, gravity box, all good.on Sunday was my first day to really use ist, took photos, read online, texting, on monday morining i still had 65% Battery left.Bluetooth works fine for me, in the Car and at Home streaming audio, NFC works without problems, i disabled the local "Tags" Software to use it with Trigger without prompting.No Complains so far, just two questions:is there a way with xposed to make the android buttons on the bottom smaller? the appear to be quite big... Root it with Framaroot, do a complete system and IMEI backup using MTK Droid Tools, get a 3rd party recovery from needrom and install it using Mobileuncle. You are all set.SP Flash Tool is used for flashing (downloading) an already backed up image of the device's partitions stored on your computer to the device itself. You can't use it for backup.There are no custom ROMs for the device yet. There is a dude at 4pda working on LeWa port, but it is still work in progressOut of the box phone is a bit lagy and need some tunning wot i didRooted by framerootOdexed by odextoolZipalingedAnd tunned abit by android tunner cos i used all this scripts pureperformance,tdt and the rest and phone became more laggy a android tunner did the trick.When memory drop around 400mb phone start by laggy ,when u clean it all start work smooth.Overall am verry happy with it screen is nice ,clear,bright and crispy. Use ing is pleasure, build is solid, i use only that back case wot come with phone and no problem , i droped it alredy few time on floor and all work good , no single issue on screen. A camera dnt have zoom. But i found u can in message apk u can zoom in/out font of ur message like in browseRooting is very easy download and install frameroot and use last/bottom option , reboot and u got root.Then from play store dwnload android tunner, then go into system mgr., Then in first tab u got options to tunne it.Me personaly rid off stock luncher and replaced with apex, more customization. I aswell trn off some aps with autostart+ some system aps mtk, enginering, location etc. No diference.Wot i ment by no zoom is in stock camera apk u dnt have zoom , i used fx camera but zoom is bad , loose quality alot.Battery is good in that case u can get second battery+ wall charger from alliexprees.I think u be ok.Ps. I asked thl to relase kernel sources for phone but they sended me to firmware, when i told them i didnt ask for that and if they can help/ give any answer , they again send me to firmware. Thirs time i told them i asked for kernel sources cos this could hel us improve their device they stop answering. Thats pain in the ass 6592 dnt have sources , cos 6589 r leaked. This could help improve battery and bring cm/omni for our devicehttp://pan.baidu.com/share/init?shar...&uk=1514078066password : 0emethis is latest custom firmware from "VIVO ~ Funtouch OS". i try until now no problem i think this is the best custom firmware for T200 . Try with Root Genius, work fine on the latest ROM. Gravity Box Function:Out of interest. What do you tweak on this device using Gravity Box?just a view optical things, center clock, battery ring on lockscreen, customize dropdown settings etcworks perfect Ultimate Dynamic NavBar :- App that alows you to get rid of that horrible space-eating black navbar and replace it with fancy showing-on-swipe customizable navbar-like panel.- panel that shows up with fancy animation by swipe from bottom edge of the screen or by touching a trigger button (Customizable).- XPOSED(safe) or build.prop mod(dangerous) to hide softkeys on your device. All devices with android 4.0+ are supported!- you can add up to 9 buttons to the panel (and assign shortClick and LongClick acitons to every button)- About 20 different action for buttons: from basic system navigation to "kill app" and "tie custom app"- Everything is themable: buttons, panel, glow-effects and more!- Swipe mode to navigate the panel like paranoid's pie.- small ram consumption (~< 8 MB of RAM)- Lots of other customizations and modeDo you know how to make screenshot with the T200? Like on other devices, pressing power on + home button or something. I tried some combinations but nothing worked.Hold vol- and power at the same time for 2 seconds. I found a clue with my compass problem:can one of you please do the following:type *#35789#* in the phone to get to the Engenieer mode und under Hardware Testing -> Sensor -> MSensorSelect current Data.Mine says "MSENSOR DATA IS NOT GOOD"what does yours say? HiI too had the problem of low volume on headphones but it is very easy to correctOn you phone keypad dial *#35789#* this will take you to engineer modeat the top of the screen you will see Telephonyswipe to the left twice and you will see Hardware TestingTap AudioTap Headset modeset Max Vol (0-160) to approx 130-140 and tap Set ............job done !If you hear a little distortion on the headphones at maximum setting just turn down the value max to maybe 125 ?It worked very well for me